diff --git a/src/serve_data.js b/src/serve_data.js
index 5a2d236..8c4bca0 100644
--- a/src/serve_data.js
+++ b/src/serve_data.js
@@ -80,8 +80,13 @@ module.exports = function(options, repo, params, id) {
 
   app.get('/' + id + '.json', function(req, res, next) {
     var info = clone(tileJSON);
-    info.tiles = utils.getTileUrls(req, info.tiles,
-                                   'data/' + id, info.format);
+    info.tiles = utils.getTileUrls(req, info.tiles, 'data/' + id, info.format);
+    // delete usless info
+    delete info.Layer;
+    delete info.id;
+    delete info.filesize;
+    delete info.basename;
+    delete info.mtime;
     return res.send(info);
   });